riddle - While I have six eyes, I don't need an optician

I thought I might try writing a riddle. Maybe this is too simple for some of the adept riddle solvers, but oh well. Here it is:

While I have six eyes, I don't need an optician.

There's just one factor to my primary condition.
Emerge from the inn, then head off to the right.
End with tea, where you can trust your eyesight.

What am I?

Answer

You are:

Indivisibility

While I have six eyes, I don't need an optician.

Indivisibility contains 6 of the letter i, but doesn't have anything to do with optometry

There's just one factor to my primary condition.

Something with 1 factor is indivisible by anything else

Emerge from the inn, then head off to the right.

The word indivisibility starts with in (sounds like "inn"), with "head off" to the right - this could either mean div in the sense of separating from the inn, or in the sense of

having similarity to as a valid HTML tag

End with tea, where you can trust your eyesight.

The word indivisibility ends with visibility, which itself ends with ty (sounds like "tea").